<template>
  <div class="swiper-container" ref="imageSwiper">
    <div class="swiper-wrapper">
      <div class="swiper-slide"  v-for="(Image,index) in imageList" :key="Image.id">
        <img :src="Image.imgUrl" :class="{active:index === defaultIndex }"  @click="defaultIndex = index">
      </div>
    </div>

    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>

  import Swiper from 'swiper'
  export default {
    name: "ImageList",
    props:['imageList'],
    data(){
        return {
          defaultIndex:0
        }
    },
    watch:{
      defaultIndex:{
          handler(){
             this.$bus.$emit('changeDefaultIndex',this.defaultIndex)
          }
      },
      imageList:{
          immediate:true,
          deep: true,
          handler(){
              this.$nextTick(()=>{
                      new Swiper(this.$refs.imageSwiper,{
                      // 如果需要前进后退按钮
                      slidesPerView : 4,
                      slidesPerGroup : 4,
                      navigation: {
                      nextEl: '.swiper-button-next',
                      prevEl: '.swiper-button-prev',
                      },
                  })
              });
          },
      },
    },
  }
</script>

<style lang="less" scoped>
  .swiper-container {
    height: 56px;
    width: 412px;
    box-sizing: border-box;
    padding: 0 12px;

    .swiper-slide {
      width: 56px;
      height: 56px;

      img {
        cursor:pointer;
        width: 100%;
        height: 100%;
        border: 1px solid #ccc;
        padding: 2px;
        width: 50px;
        height: 50px;
        display: block;

        &.active {
          border: 2px solid #f60;
          padding: 1px;
        }

        // &:hover {
        //   border: 2px solid #f60;
        //   padding: 1px;
        // }
      }
    }

    .swiper-button-next {
      left: auto;
      right: 0;
    }

    .swiper-button-prev {
      left: 0;
      right: auto;
    }

    .swiper-button-next,
    .swiper-button-prev {
      box-sizing: border-box;
      width: 12px;
      height: 56px;
      background: rgb(235, 235, 235);
      border: 1px solid rgb(204, 204, 204);
      top: 0;
      margin-top: 0;
      &::after {
        font-size: 12px;
      }
    }
  }
</style>